An artist's book working through the heritage photographic holdings of Eugène Trutat, kept by the natural history museum in Toulouse. Trutat photographed glaciers; Élisée Reclus, writing in 1875, imagined that for the great-grandsons of our sons the scene would have changed, the glacier perhaps melted into a thin stream and the mountain itself gone. The book puts the nineteenth-century survey and that prediction against each other.